21777925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{593}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 29388744

約数和(自身を除く): 7610819

約数列:

[1, 5, 13, 25, 65, 113, 325, 565, 593, 1469, 2825, 2965, 7345, 7709, 14825, 36725, 38545, 67009, 192725, 335045, 871117, 1675225, 4355585, 21777925]

約数ペア:

[(1, 21777925), (5, 4355585), (13, 1675225), (25, 871117), (65, 335045), (113, 192725), (325, 67009), (565, 38545), (593, 36725), (1469, 14825), (2825, 7709), (2965, 7345)]